Influence of a Superconducting Lead on Orbital Entanglement Production in Chaotic Cavities



Título del documento: Influence of a Superconducting Lead on Orbital Entanglement Production in Chaotic Cavities
Revista: Brazilian journal of physics
Base de datos: PERIÓDICA
Número de sistema: 000389431
ISSN: 0103-9733
Autores: 1
2
Instituciones: 1Universidade Federal do Rio Grande do Norte, Escola de Ciencias e Tecnologia, Natal, Rio Grande do Norte. Brasil
2Universidade Federal de Uberlandia, Instituto de Fisica, Uberlandia, Minas Gerais. Brasil
Año:
Periodo: Oct
Volumen: 45
Número: 5
Paginación: 532-537
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés We study orbital entanglement production in a chaotic cavity connected to four single-channel normalmetal leads and one superconducting lead, assuming the presence of time-reversal symmetry and within a random matrix theory approach. The scattered state of two incident electrons is written as the superposition of several two-outgoing quasi-particle components, four of which are orbitally entangled in a left-right bipartition. We calculate numerically the mean value of the squared norm of each entangled component, as functions of the number of channels in the superconducting lead. Its behavior is explained as resulting from the proximity effect. We also study statistically the amount of entanglement carried by each pair of outgoing quasi-particles. When the influence of the superconductor is more intense, the device works as an entangler of electron-hole pairs, and the average entanglement is found to be considerably larger than that obtained without the superconducting lead
Disciplinas: Física y astronomía
Palabras clave: Física de materia condensada,
Superconductores,
Plomo,
Cavidad caótica,
Entrelazamiento orbital
Keyword: Physics and astronomy,
Condensed matter physics,
Superconductors,
Lead,
Chaotic cavity,
Orbital entanglement
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